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Finding the Fourth Proportional to 396,868.29, 595,384.45 and 130,644.78

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Solution

The fourth proportional to 396,868.29, 595,384.45 and 130,644.78 is: 195,994.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,868.29 : 595,384.45 = 130,644.78 : x
  2. Step 2: Convert to fraction form
    396,868.29/595,384.45 = 130,644.78/x
  3. Step 3: Cross multiply
    396,868.29x = 595,384.45 × 130,644.78
  4. Step 4: Simplify right side
    396,868.29x = 77,783,870,159.06
  5. Step 5: Solve for x
    x = 77,783,870,159.06/396,868.29
  6. Step 6: Final answer
    x = 195,994.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.